.activity {
  width: 100%;
  height: 100%;
  position: relative;
  box-sizing: border-box;
}

.tianchong {
  height: 20px;
}

.activity_div {
  width: 96%;
  box-sizing: border-box;
  margin-left: 2%;
  padding-left: 1%;
  border-bottom: 1px solid #cccccc;
  padding-bottom: 10px;
  margin-bottom: 10px;
  font-size: 14px;
}
.activity_div>.blue{
  margin-left: 10px;
  cursor: pointer;
  color: #36A4FF;
}
.blue_time{
  display: inline-block;
}
.block{
  text-align: center;
  padding-bottom: 20px;
}